The new UI is a huge undertaking which affects the day-to-day work of all of our users. The new UI is intended to be fully compatible with all IntelliJ plugins (theme plugins may need to be updated). We’ve changed the look and feel and some of the UX aspects of the main IDE window, while all the code-centric features and integrations work exactly as before. While Fleet is a new product representing our attempt to rebuild the entire IDE from scratch, the new UI is a redesign of the existing JetBrains IDE product line. We’ve also published a more detailed list of changes and known issues. Simplified main toolbar with new VCS, Project, and Run widgets.Our goals were to reduce visual complexity, provide easy access to essential features, and progressively disclose complex functionality as needed – resulting in a look-and-feel that we believe is clean, modern, and powerful. Therefore, we made the bold decision to look at the UI with fresh eyes and completely reimagine the way IntelliJ IDEA and related IDEs should look and feel in this day and age. This is a problem we can’t address without major changes. Meanwhile, the UI trends in the industry have evolved, and many of our new users tell us that the UI appears heavyweight and dated. However, many aspects of our UI have changed relatively little during that time, primarily because we wanted to keep the UI familiar for the millions of existing users of our IDEs. Over these past 20 years, we’ve been evolving all aspects of our product, including its user interface and usability. Last year IntelliJ IDEA celebrated its 20th birthday. Go to Settings | Appearance & Behavior | New UI to enable it.

Update: The beta version of the new UI is available to all users in the 2022.3 release.

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